Tuesday, January 11, 2011

Mapping Out The Next 12 Hours

I've posted the maps below to help give you a general picture of what is going to happen over the next 12 hours. The purple and blues represent all snow. The shades of pinks are a mix of snow, sleet and freezing rain. Lastly, the greens are all rain.

I have updated the previous snow accumulation map at the bottom so that you can see additional totals (removing accums from this morning). As you can see, the threat for accumulating snows has now shifted to the north and northeast for the rest of this afternoon and evening. Regardless, be careful if you are going to be on the roads this evening!

Winter Weather Update: Tuesday 5:16AM

A Winter Weather Advisory is in effect Tuesday for nearly the entire Commonwealth of Virginia, including all of the Richmond metro area. Overnight we saw our first rounds of light snow and sleet moving northeast through central Virginia, leading to minimal accumulations. We'll see a more consistent round of snow and sleet developing after sunrise during the morning hours Tuesday as an area of low pressure develops off the coast. We will be in between the developing coastal low and an approaching upper low from the west, bringing us our greatest chance of precipitation during this afternoon and evening hours as these lows begin to phase together to our northeast. I expect to see snow early Tuesday, with a transition to sleet mid-day through the rest of the afternoon, and then a switch back to snow after dark before ending by Midnight in Virginia. Snow and sleet accumulations in central Virginia will range from 1-2", with some spots close to 3".